CVE-2026-17113
Cri-o: cri-o: unvalidated image env var causes daemon crash
- State
- Published
- Severity
- 6.0 Medium
- Published
- Aug 24, 2026
- Updated
- Oct 21, 2026
- Reserved
- Jul 24, 2026
Description
A flaw was found in CRI-O's container-creation environment-variable handling (`mergeEnvs` in `server/utils.go`, consumed by `setupContainerEnvironmentAndWorkdir` in `server/container_create.go`). When a `CreateContainer` request supplies a `nil` CRI `Envs` field, CRI-O falls back to using the target OCI image's `config.Env` entries unfiltered, in contrast to the normal merge path, which validates each entry for a `key=value` form before use. An OCI image whose `config.Env` contains an entry with no `=` character (e.g. a bare `NOEQUALS` string) causes CRI-O to split that entry into a single-element slice and then index its second element, which is out of range. This triggers an unrecovered Go runtime panic in the `crio` daemon process, crashing it and terminating the container-runtime service for all workloads on the node until it is restarted.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.0 Medium | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H | redhat |
Weaknesses
- CWE-1287 Improper Validation of Specified Type of Input
Affected Products
| Product | Versions |
|---|---|
cri-o |
|
Red Hat OpenShift Container Platform 4Red Hat | |
Red Hat OpenShift Container Platform 4Red Hat | |
Red Hat OpenShift Container Platform 4Red Hat | |
Red Hat OpenShift Container Platform 4Red Hat |
References
- https://access.redhat.com/security/cve/CVE-2026-17113vdb-entry
- RHBZ#2506872issue-tracking
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